note
Corion
<p>Instead of running off, again, on a wild goose chase, it maybe would be simpler to just read [doc://keys], the official documentation? It mentions there that:</p>
<blockquote>
Starting with Perl 5.14, keys can take a scalar EXPR, which must contain a reference to an unblessed hash or array. The argument will be dereferenced automatically. This aspect of keys is considered highly experimental. The exact behaviour may change in a future version of Perl.
</blockquote>
<p>... and without seeing your code, my guess is that you are "using" that experimental feature, knowingly or not.</p>
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